Heart Rhythm

Hearts should have normal rhythm to their beats, but when these beats are out of synch, it causes inefficient pumping of blood. Irregular heart arrhythmias occur when the electrical signals that coordinate the heart's beats do not work properly. This can cause beats that are too fast (tachycardia), or too slow (bradycardia). Tachycardias include atrial fibrillation (AFib), supraventricular tachycardia, ventricular fibrillation, and ventricular tachycardia (VT). Bradycardias include sick sinus syndrome and conduction block. Electrophysiology arrhythmia treatments include medications, life style changes, and the EP lab interventions of catheter ablation, and implantable pacemakers or defibrillators.

FDA green-lights subcutaneous ICD

The FDA has approved a subcutaneous implantable cardioverter-defibrillator (S-ICD) for the treatment of patients at risk for sudden cardiac arrest.

GAO: FDA process overlooks information security risks for ICDs

The FDA’s premarket approval process for implantable cardioverter-defibrillators (ICDs) addresses potential clinical risks but not information security risks, according to a report by the Government Accountability Office (GAO).

ICD patients need more education, psychological support

Implantable cardioverter-defibrillators (ICDs) have been demonstrated to reduce mortality, but treatment teams may not fully appreciate, or adequately respond to, the psychosocial distress ICD patients and their families experience, according to a statement from the American Heart Association.

FDA sets date for Eliquis once again

The FDA has set a goal date of March 17 to review apixaban (Eliquis, Bristol-Myers Squibb/Pfizer) to reduce the risk of stroke and systemic embolism in patients with nonvalvular atrial fibrillation.

Ambulatory practices adopt dabigatran, with cardiologists leading pack

Physicians in ambulatory practices have embraced the anticoagulant dabigatran, with cardiologists leading the charge, according to a study published in the September issue of Circulation: Cardiovascular Quality and Outcomes. The direct thrombin inhibitor was prescribed primarily for atrial fibrillation (AF), and it was increasingly used off-label. Nonetheless, AF undertreatment persisted.

Increasing use of dual-chamber pacemakers raises hospital costs

Although permanent dual-chamber pacemaker device use is increasing in the U.S., single-chamber ventricular pacemaker use is decreasing. These trends have resulted in a 45 percent increase in hospital charges, driven by the cost of dual-chamber devices, and have "healthcare policy implications," according to authors of a study published online Sept. 19 in the Journal of the American College of Cardiology.

AF patients receive disparate medical therapy for stroke prevention

While pharmacotherapy for atrial fibrillation (AF) varies according to comorbidity and underlying risk, a study of Medicare Part D claims data showed that amiodarone was the most commonly prescribed antiarrhythmic agent at approximately 50 percent. The study appeared in the September issue of HeartRhythm.

Around the web

Ron Blankstein, MD, professor of radiology, Harvard Medical School, explains the use of artificial intelligence to detect heart disease in non-cardiac CT exams.

Eleven medical societies have signed on to a consensus statement aimed at standardizing imaging for suspected cardiovascular infections.

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